女研究生群体心理压力探析     

肖潇  刘霞 《邵阳学院学报(社会科学版)》2007,6(2):149-151

随着高校的扩招,女研究生的数量持续增长,她们的心理健康状况也不容乐观.受社会角色与性别角色的双重影响,女研究生面临着就业、婚恋、学业和人际等方面的心理压力.如何缓解这一群体的心理压力应成为学校、社会、家庭和女研究生个人共同的任务.  相似文献   

基于SOAP的企业资源计划集成研究     

卢本捷  魏守平  罗萍  谭华 《上海大学学报(英文版)》2004,8(1):43-50

While the enterprise resource planning (ERP) systems become more and more complex, the traditional tools such as DCOM, CORBA or EJB encounter more difficulties than before especially when heterogenous and distributed environment and multiple companies are involved. The newly bern international specification SOAP brings a new solution to ERP because of its simplicity and high extensibility. This paper analyses the techniques to extend basic SOAP to implement ERP system. The techniques, including data envelope, dynamically and loosely coupled remote process calling (RPC), support to the multiple communication protocol, and security and performance improvement, greatly enhance the ability of basic SOAP and make it capable to accomplish the integration task in large scale ERP systems. All the techniques we discusse here are successfully utilized in the ERP system in the Three Gorge Cascade Dispatch Center of China Three Gorge Project Corporation.  相似文献   

金属支架药物涂层释放量的比较     

李昕跃  马斌 《大连大学学报》2004,25(6):58-59

临床应用中的PTCA技术,由于金属支架植入后对血管壁的损伤及异物的炎性反应,可引起内膜增生而导致血管内再狭窄.为解决这一难题,采用药物涂层支架进行控制和预防.通过不同的方式对金属支架表面进行药物涂层,并对药物释放量进行比较.  相似文献   

氧化淀粉控释材料的研究   总被引：1，自引：0，他引：1  

左秀锦  戴小敏  周毅  徐海燕  王湛 《大连大学学报》2003,24(4):35-38

本文探索研究了氧化淀粉替代海藻酸钠的可能性,系统考察了制备条件对氧化淀粉性能的影响,包括反应温度、pH值、淀粉乳浓度、氧化剂用量等因素及其各种条件下的羧基含量。实验表明,随着pH值的降低,淀粉乳浓度的增加,氧化剂用量的增加,羧基含量有所增加。温度影响反应速度,温度对羧基含量影响不显著,考察了自制备氧化淀粉的成膜可行性。  相似文献   

GA and PSO culled hybrid technique for economic dispatch problem with prohibited operating zones     

SUDHAKARAN M. AJAY-D-VIMALRAJ P. PALANIVELU T.G. 《浙江大学学报(A卷英文版)》2007,8(6):896-903

This paper presents an efficient and reliable genetic algorithm (GA) based particle swarm optimization (PSO) tech- nique (hybrid GAPSO) for solving the economic dispatch (ED) problem in power systems. The non-linear characteristics of the generators, such as prohibited operating zones, ramp rate limits and non-smooth cost functions of the practical generator operation are considered. The proposed hybrid algorithm is demonstrated for three different systems and the performance is compared with the GA and PSO in terms of solution quality and computation efficiency. Comparison of results proved that the proposed algo- rithm can obtain higher quality solutions efficiently in ED problems. A comprehensive software package is developed using MATLAB.  相似文献   

弱碱离子交换树脂应用于含酚废水的处理   总被引：1，自引：0，他引：1       下载免费PDF全文

张丽珍  刘惠茹 《惠州学院学报》2001,21(4):52-56

报导用四种离子交换树脂处理含酚废水的情况, 溶液的pH 值不同, 浓度不同, 处理的效果不一样. 通过动态实验结果表明, 四种树脂中, 大孔树脂吸附量最大, 最适合用于含酚废水的处理.  相似文献   

A pooled-neighbor swarm intelligence approach to optimal reactive power dispatch     

GUO Chuang-xin ZHAO Bo 《浙江大学学报(A卷英文版)》2006,7(4):615-622

INTRODUCTION The reactive power dispatch is aimed at mini- mizing the active power loss in the transmission network by allocating the reactive power generation under several security constraints. The reactive power dispatch problem has significant influence on secure and economic operation of power systems. The reac- tive power generation affects the overall generation cost via transmission loss. A procedure which allo- cates the reactive power generation so as to minimize the transmissio…  相似文献   

长释放时间间隔优先调度算法及其可调度性分析     

沈卓炜  汪芸 《东南大学学报》2006,22(4):484-489

针对混合任务实时调度的需求和现有混合任务实时调度算法的局限性,提出了一种长释放时间间隔优先的混合任务实时调度算法LRIF,该算法采用固定优先级和动态优先级相结合的调度策略,根据非周期性软实时任务作业到达流分布,将一定比例的软实时任务作业当作硬实时作业调度,除了可对周期性硬实时任务提供调度保证外,同时还可确保非周期性软实时任务的可调度率.还提出了LRIF调度算法的可调度性分析方法,并讨论了LRIF调度算法的实现方法.测试结果表明:LRIF调度算法具有更好的调度性能,可有效调度由周期性硬实时任务和非周期性软实时任务构成的混合实时系统.  相似文献   

Auto-Ignition and Heat Release Correlations for Controlled Auto-Ignition Combustion in Gasoline Engines     

秦静  何邦全谢辉 赵华 《天津大学学报(英文版)》2007,13(5):328-333

Auto-ignition and heat release correlations for controlled auto-ignition(CAI)combustion were derived from extensive in-cylinder pressure data of a four-stroke gasoline engine operating in CAI combustion mode.Abundant experiments were carried out under a wide range of air/fuel ratio,speed and residual gas fraction to ensure that the combustion correlations can be used in the entire CAI engine operation range.Furthermore,a more accurate method to compute the residual gas fraction was proposed by calculating the working fluid temperature at the exhaust valve close timing in the experiments.The heat release correlation was described in two parts,one is for the first slower heat release process at low temperature,and the other is for the second faster heat release process at high temperature.Finally the heat release correlation was evaluated on the single cylinder gasoline engine running with CAI combustion by comparing the experimental data with the 1-D engine simulation results obtained with the aid of the GT-Power simulation program.The results show that the predicted loads and ignition timings match closely with the measurements.  相似文献   

完善我国劳务派遣制度的思考     

陈唯 《黄河科技大学学报》2012,40(1):125-128

由于我国正处在社会主义初级阶段,劳动关系相对来说比较复杂。我国颁行的《劳动合同法》虽然在一定程度上填补了我国有关“劳务派遣”的立法空白,也进一步规范了我国的劳务派遣市场,但相关纠纷还是时有发生。完善我国相关法律法规、拓展派遣机构服务职能、加强对劳务派遣工作的监管等是解决问题的关键。  相似文献